Chinese tea served from copper kettles in the form of calabashes, i.e. nahm tao, in a tea shop in Bangkok's Chinatown.

The calabash-shaped kettles alone already refer to supernatural shielding and healing, as in the past physicians would carry medicine with them inside a calabash, which ever since has been regarded as a legendary symbol associated with healing, as well as the fact that its shape resembles the auspicious number eight (8), that is associated with wealth and longevity.